body {
  margin: 20px;
}
.layui-form-label {
  width: 100px;
}
.front-cover {
  display: flex;
}
.front-cover .left {
  width: 400px;
  height: 280px;
}
.front-cover .left img {
  width: 100%;
  height: 100%;
  display: block;
  max-width: 100%;
}
.front-cover .right {
  display: flex;
  margin-left: 20px;
  flex-direction: column;
  align-items: center;
}
.front-cover .right .top {
  width: 200px;
  height: 140px;
  margin-bottom: 20px;
}
.front-cover .right .top canvas {
  width: 100%;
  height: 100%;
}
